Build failed. https://zuul.opendev.org/t/openstack/buildset/ebbe47a64302472cb55335ab18738f2a - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/291a425effc041a2aeb5f996fb03453d : FAILURE in 7m 49s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/82932b54bc4d4c28816d1143f9a32394 : SUCCESS in 5m 23s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/95ae885ed6bd4e499d0d6fe55e7faa1b : SUCCESS in 6m 28s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/6618313b3b894fd79ca619c3ba4c280f : SUCCESS in 6m 20s